Yeah I guess the biggest problem is that people watching football nowadays are used to players not being saints, by any standards, but you still expect a bit of coherence from a player. If you're going to have a thug attitude, well then you should be ready to take in what comes your way because of that. If you're going to be a diver, don't go round trying to be Johnny Hard Man. The thing that irks people with Suarez, most of all, I feel (having spoken to some people who aren't that into English football, don't have any bias towards any of the PL clubs), is that he tries to dish it out but can't take it in. Having a guy who deliberately goes out and kicks, bites, pulls hair and goes into reckless challenge, but also spends half of his time diving all over the place, is annoying.
There's no bloody agenda against him, it's just the player he is. He's very talented as well, but trying to push forward the line "there's an agenda against him, all we ever talk about is his antics and not his talent" is plain stupid. The reason why people talk about the controversy surrounding him so much is because it reaches unique levels in the world of football. There's no one to blame but himself.